@args String exception
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>大厅自助-促销活动</title>
</head>
<body>
<h2 class="page-header">出错啦~</h2>
<div class="alert alert-danger" role="alert">
    <pre>
        @exception
    </pre>
    <a class="btn btn-success" href="@url("/index.html")">返回</a>
</div>
</body>
</html>